OT Security Consultant

Job Description

OT Security Consultant

We are looking for two experienced OT Security Consultants to join our team in Navi Mumbai. The ideal candidates will bring strong expertise in Operational Technology (OT) / Industrial Control Systems (ICS) security, hands-on experience designing and deploying Armis, sound knowledge of the IEC 62443 series of standards, and demonstrated capability in conducting OT risk assessments for industrial and critical infrastructure environments.

• Design, plan, and lead deployment of Armis (or similar OT/IoT asset visibility and security platforms) across client industrial environments, including sensor placement, network architecture review, and integration with existing IT/OT infrastructure.

• Conduct OT/ICS risk assessments, vulnerability assessments, and gap analyses aligned with IEC 62443 and other relevant OT security frameworks (NIST CSF, NERC CIP, etc.).

• Develop and support implementation of OT security architecture, zone and conduit segmentation models, and defense-in-depth strategies as per IEC 62443 principles.

• Perform asset discovery, inventory, and classification of OT/ICS assets (PLCs, RTUs, DCS, SCADA, HMIs) using Armis and related tools.

• Support incident response, threat detection, and monitoring activities for OT environments.

• Prepare detailed technical documentation, risk reports, security policies, and remediation roadmaps for client stakeholders.

• Engage with client OT, IT, engineering, and plant teams to gather requirements, present findings, and drive security improvement initiatives.

• Stay current with emerging OT/ICS threats, vulnerabilities, and industry best practices, and provide advisory support to clients accordingly.

• Collaborate with cross-functional teams (SOC, network, compliance) to ensure OT security controls are effectively integrated into the broader security program.

• Strong working knowledge of IEC 62443 standards (security levels, zones & conduits, risk assessment methodology, and lifecycle requirements).

• Hands-on experience in the design, deployment, and configuration of Armis in OT/industrial environments.

• Proven experience conducting OT/ICS risk assessments, vulnerability assessments, and security audits.

• Solid understanding of ICS/SCADA architectures, protocols (Modbus, DNP3, OPC, Profinet, etc.), and industrial network components.

• Familiarity with OT security frameworks and guidelines such as NIST SP 800-82, NERC CIP, and ISO 27001, in addition to IEC 62443.

• Experience with network segmentation, firewalls, and monitoring solutions in OT environments.

• Strong analytical, documentation, and client communication skills.

• Ability to work on-site with plant/engineering teams and manage stakeholder expectations independently.

• Bachelor's degree in Engineering, Computer Science, Information Security, or a related field.

• Relevant certifications such as GICSP, CRISC, ISA/IEC 62443 Cybersecurity Certifications, CISSP, or CEH will be an added advantage.

• Prior experience working with manufacturing, energy, utilities, oil & gas, or other critical infrastructure sectors.

• Experience of 3-6 years in OT/ICS security consulting or a related domain.

Navi Mumbai. Candidates should be willing to work from the office and travel to client/plant sites as required.